Kualitatem - Kualitatem is an agile, business-focused global technology consultants offering Independent Software Quality Assurance Testing and Information Security Auditing services.

Beeceptor - Unblock yourself from API dependencies, and build & integrate with APIs fast. Beeceptor helps you build a mock Rest API in a few seconds.

Testlio - Testlio is a community of expert testers that help companies release their apps with highest confidence

MockServer - Easy mocking of any system you integrate with via HTTP or HTTPS.

TestRail - TestRail provides comprehensive test case management for software testing. Organize your testing, boost productivity, get real-time insights, and track progress toward milestones. Integrates with leading issue tracking and test automation tools.

Webhook.site - Instantly generate a free, unique URL and email address to test, inspect, and automate (with a visual workflow editor and scripts) incoming HTTP requests and emails.